using Microsoft.VisualStudio.TestTools.UnitTesting;
using Shouldly;
using SWP.Core;

namespace SWP.Core.X.TDD.Security;

[TestClass]
public class SecureTokenizerTests
{
    private ISecureTokenizer _tokenizer;

    [TestInitialize]
    public void Setup()
    {
        _tokenizer = new SecureTokenizer();
    }

    [TestMethod]
    public void TokenizeText_ShouldReturnNonEmptyString()
    {
        // Act
        var token = _tokenizer.TokenizeText("testPassword");

        // Assert
        token.ShouldNotBeNullOrEmpty();
    }

    [TestMethod]
    public void TokenizeText_ShouldReturnDifferentTokensForSamePassword()
    {
        // Arrange
        var password = "testPassword";

        // Act
        var token1 = _tokenizer.TokenizeText(password);
        var token2 = _tokenizer.TokenizeText(password);

        // Assert
        token1.ShouldNotBe(token2);
    }

    [TestMethod]
    public void VerifyToken_ShouldReturnTrueForValidPassword()
    {
        // Arrange
        var password = "testPassword";
        var token = _tokenizer.TokenizeText(password);

        // Act
        var result = _tokenizer.VerifyToken(token, password);

        // Assert
        result.ShouldBeTrue();
    }

    [TestMethod]
    public void VerifyToken_ShouldReturnFalseForInvalidPassword()
    {
        // Arrange
        var password = "testPassword";
        var token = _tokenizer.TokenizeText(password);

        // Act
        var result = _tokenizer.VerifyToken(token, "wrongPassword");

        // Assert
        result.ShouldBeFalse();
    }

    [TestMethod]
    public void VerifyToken_ShouldReturnFalseForMalformedToken()
    {
        // Act & Assert
        _tokenizer.VerifyToken("invalid.token", "password").ShouldBeFalse();
        _tokenizer.VerifyToken("", "password").ShouldBeFalse();
    }

    [TestMethod]
    public void VerifyToken_ShouldHandleNullInputs()
    {
        // Act & Assert
        Should.Throw<NullReferenceException>(() => _tokenizer.VerifyToken(null, "password"));
        // Note: Current implementation doesn't handle null inputs gracefully
        // This should be fixed in production code
    }
}